Glossary O

Opium poppy is a plant cultivated for centuries, primarily in Eurasia, for Opium, a narcotic that acts as a central nervous system depressant

OPO refers to an organ procurement organization; one of the authorized local or regional agencies that implements procedures to offer the opportunity of organ donation and to recover donated organs

Opponent neurons is a neuron that has an excitatory response to wavelengths in one part of the spectrum and an inhibitory response to wavelengths in the other part of the spectrum.

Opponent-process theory refers to a theory which states that strong emotions tend to be followed by an opposite emotional state; also the strength of both emotional states changes over time.

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Opponent-process theory of color vision refers to a theory originally proposed by Hering, which claimed that human perception of color is determined by the activity of two ("9 opponent mechanisms: a blue–yellow mechanism and a red–green mechanism. The responses to the two (2) colors in each mechanism oppose each other, one being an excitatory response and the other an inhibitory response. In addition, this theory also includes a black–white mechanism, which is concerned with the perception of brightness. Please see also Opponent neuron.

Opportunistic disease refers to a disease that occurs when the immune system is depressed which is usually fatal.

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Opportunistic infections is defined as infections caused by organisms that cannot induce disease in people with normal immune systems, but take the "opportunity" to flourish in people with HIV infection.

Deutsch: Chance / Español: Oportunidad / Português: Oportunidade / Français: Opportunité / Italiano: Opportunità /

The term "opportunity" refers to a set of circumstances or a specific moment in time that presents a chance for individuals to engage in certain actions, make choices, or pursue particular goals. Opportunities can encompass various aspects of life, including personal, social, academic, and career-related domains. Psychologists study opportunities and their impact on human behavior, decision-making, development, and well-being. Understanding how individuals perceive and respond to opportunities is essential for comprehending their choices and life trajectories. Here, we will explore the concept of opportunity in psychology, provide examples, and list similar concepts and terms used in psychological research.

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